Non-fouling polymeric surface modification and signal amplification method for biomolecular detection
First Claim
1. A biomolecular detector, comprising:
- (a) a substrate having a surface portion;
(b) a linking layer on said surface portion; and
(c) a polymer layer formed on said linking layer by a process of surface-initiated polymerization of monomeric units thereon, with each of said monomeric units comprising a monomer core group having at least one protein-resistant head group coupled thereto, to thereby form a brush molecule on said surface portion;
said brush molecule comprising a stem formed from the polymerization of said monomer core groups, and a plurality of branches formed from said head group projecting from said stem; and
(d) a first member of a specific binding pair coupled to said brush molecule.
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Abstract
An article such as a biosensor having a nonfouling surface thereon is described. The article comprises: (a) a substrate having a surface portion; (b) a linking layer on the surface portion; (c) a polymer layer comprising brush molecules formed on the linking layer; and (d) optionally but preferably, a first member of a specific binding pair (e.g., a protein, peptide, antibody, nucleic acid, etc.) coupled to the brush molecules. The polymer layer is preferably formed by the process of surface-initiated polymerization (SIP) of monomeric units thereon. Preferably, each of the monomeric units comprises a monomer (for example, a vinyl monomer) core group having at least one protein-resistant head group coupled thereto, to thereby form the brush molecule on the surface portion. Methods of using the articles are also described.
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Citations
20 Claims
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1. A biomolecular detector, comprising:
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(a) a substrate having a surface portion; (b) a linking layer on said surface portion; and (c) a polymer layer formed on said linking layer by a process of surface-initiated polymerization of monomeric units thereon, with each of said monomeric units comprising a monomer core group having at least one protein-resistant head group coupled thereto, to thereby form a brush molecule on said surface portion; said brush molecule comprising a stem formed from the polymerization of said monomer core groups, and a plurality of branches formed from said head group projecting from said stem; and (d) a first member of a specific binding pair coupled to said brush molecule. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A biomolecular detector, comprising:
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(a) a substrate having a surface portion; (b) a linking layer on said surface portion; and (c) a polymer layer formed on said linking layer by a process of surface-initiated polymerization of monomeric units thereon, with each of said monomeric units comprising a monomer core group having at least one protein-resistant head group coupled thereto, to thereby form a brush molecule on said surface portion; said brush molecule comprising a stem formed from the polymerization of said monomer core groups, and a plurality of branches formed from said head group projecting from said stem; and (d) a first nucleic acid as a first member of a specific binding pair coupled to said brush molecule. - View Dependent Claims (19, 20)
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Specification